Chemically hardened silver halide emulsions containing tempering concentrations of simple organic polyols

Abstract

Abstract PHOTOGRAPHIC SILVER HALIDE ELEMENTS CONTAINING HYDROPHILIC COLLOIDS ARE TEMPERED BY SIMPLE ORGANIC POLYOLS HAVING THE FORMULAE: (R-(CO)P)M-N(-H)(3-N-M)-(C(-CH2-OH)3)N INDAN WHEREIN R IS PHENYL OR SUBSTITUTED PHENYL, ALKYL, SUBSTITUTED ALKYL OR ALKENYL, P IS 0 OR 1, M IS 0, 1 OR 2, AND N IS 1 OR 2, THE SUM OF M AND N BEING AT MOST 3, OR R''-OOC-C(-CH2-OH)3 WHEREIN R'' IS ALKYL, A HYDROGEN ATOM, AN ALKALI METAL OR THE ATOMS NECESSARY TO COMPLETE AN AMMONIUM SALT GROUP, (HO-CH2)2-C<(-D-C(-CH2-OH)2-C(-R2)(-R3)-) WHEREIN D IS THE ATOMS NEEDED TO COMPLETE A 5 OR 6 MEMBERED CARBOCYCLIC RING, AND TAKEN SEPARATELY, R2 IS HYDROGEN AND R3 IS HYDROXY, OR TAKEN TOGETHER R2 WITH R3 REPRESENTS AN XO-GROUP OR O<(-CO-NH-C(-CH2-OH)2-CH2-), OR 1-(O=),2,2-DI(HO-CH2-)- ALSO DISCLOSED ARE PROCESSES FOR EFFECTING TEMPERING OF VARIOUS LAYERS COMPRISING THESE POLYOLS AND POLYMERIC LATEX DISPERSIONS.

Inventors

• 👤 E Abel
• 👤 R Darlak
• 👤 L Minsk

Bibliographic Details